:root {
  color-scheme: dark light;
}
html {
  box-sizing: border-box;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}
body {
  margin: 1rem;
  font-family: system-ui, sans-serif;
}
button:before {
  content: "Enter ";
}
button.on:before {
  content: "Leave ";
}
video {
  display: block;
  margin-top: 10px;
  max-width: 100%;
}
video.fake-pip {
  position: fixed;
  z-index: 1000;
  bottom: 10px;
  right: 10px;
}